Description: This metal water flow meter is a necessary DIY tool kit for computer water cooling system. High quality material ensures perfect durability and performance. Light and easy to use. Features: 8-leaves impeller water flow meter helps you to observe the speed and working states of the water flow, so that to avoid overheating and fully protect computer host. Made of high-quality aluminum alloy + acrylic material, durable to use. Polished surface processing amplifies cutting property and prolongs using life. Adhesive sealing, easy to install and use. Specifications: Material: Aluminum Alloy + Acrylic Color: Red, Blue, Yellow, Silver, Gray Shape: Octagon Screw Thread: G1/4 (2 Teeth) Thread Length: approx. 4.5mm /0.17in Size: Approx. 45 x 45 x 30mm / 1.8 x 1.8 x 1.2in Package Weight: 59g Package List: 1 * Water Flow Meter Note: The color of impellers are random. Please allow 1-3mm differs due to manual measurement. Due to the different display and different light, the picture may not show the actual color of the item. Thanks for your understanding. 1、8-leaves impeller water flow meter helps you to observe the speed and working states of the water flow, so that to avoid overheating and fully protect computer host. 2、Made of high-quality aluminum alloy + acrylic material, durable to use. 3、Polished surface processing amplifies cutting property and prolongs using life. 4、Adhesive sealing, easy to install and use.